engineering fundamentals Investment castings in China

Investment castings in China

Fly foundry is the premier supplier of complete-to-print, high-volume, complex thin-wall investment castings and fully-finished casting-based subassemblies and components to industry. Fly has chosen to utilize, develop, and enhance the investment casting process because of its many advantages in effeciently producing complex metal components, including:

Design flexibility
Investment casting produces near-net-shape configurations, offering designers and engineers freedom of design in a wide range of alloys. The process is capable of producing precise detail and dimensional accuracy in parts weighing many pounds or just a few ounces.

Wide choice of alloys
Many dozens of ferrous alloys are routinely cast at Fly foundry.

Elimination of tooling setup
By offering near-net-shape configuration, fixturing costs are substantially reduced or eliminated.

Reduction of production costs
Costly machining operations are reduced and often eliminated. No capital equipment investment is needed to produce parts in-house.

Reduction of assembly operations
Several parts can be made as one casting, reducing handling, assembly and inspection costs.

Reproduction of fine details
Splines, holes, bosses, lettering, serrations and even some threads can be cast.

Contact Cathy
Address Zhongshan East Road,Haishu District
Country China
Telephone 86-574-27682916
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Lost wax castings

Lost Wax Casting or as it is known today, Investment Casting, has been around for over 5000 years and was widely used up until the 18th Century.

This great method has been used all over the world and was first found being used in India and many other places across the world.

Lost Wax Casting can also be known as “lost mould” which really shows that although wax has been the more favoured method of creating the cast that other materials have been used also as the base of creating the mould. Many other materials such as tallow, resin, tar and textile have been used.

Giving the perfect results that are so well known due to this method require high levels of experience and skill in this field and that is where we can help.

-Manufacturing , Processing and Tooling > Castings
-Materials, Chemicals and Adhesives > Metals and Alloys
-Mechanical Components > Brakes and Clutches

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silica sol castings

Silica sol casting process is the main steel investment casting process of Cinda investment casting foundry. Cinda investment casting foundry has its own silica sol factory which not only supply all silica sol molding material for our own foundry, also supply high quality silica sol for other precision casting foundries around Ningbo area. We have been developing new technology of adhesive material to achieve much more economical and effective adhesive material for investment casting industry.

It is a overwhelming trend that Silica sol casting process replaces the rough inferior water glass process in whole precision casting industry, especially for stainless steel casting and alloy steel casting. Besides the innovated molding material, the silica sol casting process has also being innovated to much steadier and less heat expanding.

-Manufacturing , Processing and Tooling > Castings
-Materials, Chemicals and Adhesives > Metals and Alloys
-Mechanical Components > Couplings, Collars and Joints

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lost foam castings

Lost-foam casting (LFC) is a type of evaporative-pattern casting process that is similar to investment casting except foam is used for the pattern instead of wax. This process takes advantage of the low boiling point of foam to simplify the investment casting process by removing the need to melt the wax out of the mold.

First, a pattern is made from polystyrene foam, which can be done many different ways. For small volume runs the pattern can be hand cut or machined from a solid block of foam; if the geometry is simple enough it can even be cut using a hot-wire foam cutter. If the volume is large, then the pattern can be mass-produced by a process similar to injection molding. Pre-expanded beads of polystyrene are injected into a preheated aluminum mold at low pressure. Steam is then applied to the polystyrene which causes it to expand more to fill the die. The final pattern is approximately 97.5% air and 2.5% polystyrene. Pre-made pouring basins, runners, and risers can be hot glued to the pattern to finish it.

Next, the foam cluster is coated with ceramic investment, also known as the refractory coating, via dipping, brushing, spraying or flow coating. This coating creates a barrier between the smooth foam surface and the coarse sand surface. Secondly it controls permeability, which allows the gas created by the vaporized foam pattern to escape through the coating and into the sand. Controlling permeability is a crucial step to avoid sand erosion. Finally, it forms a barrier so that molten metal does not penetrate or cause sand erosion during pouring. After the coating dries, the cluster is placed into a flask and backed up with un-bonded sand. The sand is then compacted using a vibration table. Once compacted, the mold is ready to be poured.Automatic pouring is commonly used in LFC, as the pouring process is significantly more critical than in conventional foundry practice.

There is no bake-out phase, as for lost-wax. The melt is poured directly into the foam-filled mould, burning out the foam as it pours. As the foam is of low density, the waste gas produced by this is relatively small and can escape through mould permeability, as for the usual outgassing control.

-Manufacturing , Processing and Tooling > Castings
-Materials, Chemicals and Adhesives > Metals and Alloys
-Mechanical Components > Industrial Tools

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stainless steel investment castings

Stainless steel investment casting is a demanding investment casting process, which asks for high precision stainless steel alloying, since normally we have to add certain alloys element to achieve the certain stainless steel with different chemical composition. Because stainless steel casting uses relatively expensive stainless steel ingot for alloying, the casting always asks for much precision dimensions. Thus the casting process essentially the molding adhesive should be much more effective and steady than that for carbon steel casting. Normally we use silica sol as molding adhesive singly. Furthermore, stainless steel precision casting involves necessary post precision machining to obtain fine geometrical dimensions.

-Manufacturing , Processing and Tooling > Castings
-Materials, Chemicals and Adhesives > Metals and Alloys
-Mechanical Components > Assembly Hardware

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carbon steel investment castings

Carbon steel investment castings may be selected for your saving cost. Because we provide castings to net shape, we can eliminate most, if not all secondary machining operations.Providing a net shape to typical casting tolerances of +/-.005" per inch, Cheonseng Precision Foundry has proved time and time again that sand castings, forgings, and machined components can be converted to carbon steel investment castings with significant cost savings.

We also have the capabilities of furnishing secondary operations such as machining, plating, heat treatment and assembly. Our cosmetics are as good as any foundry can offer, better than most.

-Manufacturing , Processing and Tooling > Castings
-Materials, Chemicals and Adhesives > Metals and Alloys
-Mechanical Components > Power Transmission

Related Product Categories
Materials, Chemicals and Adhesives
Metals and Alloys
Any of various opaque, fusible, ductile, and typically lustrous substances that are good conductors of electricity and heat, form cations by loss of electrons, and yield basic oxides and hydroxides.
Mechanical Components
Brakes and Clutches
Driveline components used to transmit and control power and relative motion between two rotating shafts.
Couplings, Collars and Joints
Mechanical shaft-mounting components for transmitting motion between two shafts, locking or locating components, or as mechanical stops.
Industrial Tools
High durability hand tools for industrial assembly, cutting, forming or marking that are often automated or have monitoring capabilities.
Power Transmission
Belts and pulleys, sprockets and chains, gears, and other drive components used to transmit power.
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